Skip to main content

​
Welcome to KillB

KillB provides a comprehensive platform for cryptocurrency on-ramps and off-ramps across Latin America. Convert between fiat currencies (COP, MXN, USD) and cryptocurrencies (USDC, USDT) seamlessly.

​
Choose Your Path

Perfect for individuals and manual transactionsUse our web portal to buy and sell crypto without writing code.

Portal Guide

Get started with the KillB OTC Portal →

Buy Crypto

Convert fiat to crypto

Sell Crypto

Convert crypto to fiat

​
What You Can Build

Build powerful applications with our crypto infrastructure:

Payment Solutions

Accept crypto payments and settle in local fiat currencies

Remittance Services

Enable fast, low-cost cross-border money transfers

Crypto Exchanges

Build on/off-ramp functionality into your platform

Savings Accounts

Offer USD-denominated savings with custodial wallets

Treasury Management

Manage corporate liquidity across fiat and crypto

Wallets & Neobanks

Integrate fiat-to-crypto conversion capabilities

​
Key Features

Support for major Latin American fiat currencies (COP, MXN) and stablecoins (USDC, USDT) across multiple blockchain networks including Polygon, Solana, Tron, and more.
Accept payments via SPEI (Mexico), PSE (Colombia), TRANSFIYA (Colombia), ACH, Wire, and crypto wallets. Choose the best method for your users.
Built-in KYC and KYB workflows with multiple verification levels (L0-L4) to meet regulatory requirements across different transaction limits.
Get instant notifications for ramp status changes, user events, account updates, and transactions to keep your application in sync.
Set up pre-funded accounts for faster transaction processing and better liquidity management for high-volume operations.
Test your integration safely with our sandbox environment before going live. Simulate cash-in and cash-out operations without real funds.

​
Supported Networks

Fiat Currencies

COP - Colombian Peso
MXN - Mexican Peso
USD - US Dollar

Cryptocurrencies

USDC - USD Coin
USDT - Tether USDNetworks: Polygon, Solana, Tron, Arbitrum, BSC, ERC20
Convert local fiat currency to cryptocurrency:
  1. User creates a quotation (COP/MXN → USDC/USDT)
  2. User creates a ramp with payment details
  3. User sends fiat via local payment method
  4. KillB processes conversion
  5. Crypto delivered to user’s wallet

​
Integration Path

1

Create Account

Sign up for a KillB account and get your API credentials from the portal
2

Test in Sandbox

Use sandbox environment to test your integration with fake data
3

Build Your App

Implement users, accounts, and ramp flows using our API
4

Go Live

Switch to production credentials and start processing real transactions

​
Ready to Get Started?

Read the Quickstart

Follow our step-by-step integration guide

Explore the API

Browse the complete API documentation
Need help? Contact our support team at [email protected] or visit our website.